Dr. McMahon is out to change lives by offering free smiles to anyone who needs dental work, as he hosts the latest event for Dentistry From the Heart (DFTH). "My goal is to give back to the local community -- whether they're out of a job, or just don't have dental insurance. Dentistry from the Heart is my way of helping people who are in need of dental work," said Dr. McMahon. Dr. McMahon and his team will treat patients on a first come, first serve basis.